main/c/moon_8h_source.html

#pragma once

#include <time.h>

#include <stdbool.h>

#include <stdint.h>


#define MOON_SYNODIC_SEC 2551443

#define MOON_EPOCH_UTC   947182440


int32_t moon_age_sec(time_t utc);


int moon_glyph_index(time_t utc, int count);


int moon_illumination_pct(time_t utc);


const char *moon_phase_name(time_t utc);


int moon_days_to_phase(time_t utc, bool to_full);


moon_days_to_phase
int moon_days_to_phase(time_t utc, bool to_full)
How many days until the next full or new moon, rounded to the nearest whole day.
Definition moon.c:48

moon_phase_name
const char * moon_phase_name(time_t utc)
Short name for the current phase (one of the eight main phases).
Definition moon.c:74

moon_glyph_index
int moon_glyph_index(time_t utc, int count)
Picks one of count evenly spaced phase icons. It wraps back round at the end.
Definition moon.c:22

moon_illumination_pct
int moon_illumination_pct(time_t utc)
How lit up the moon looks, from 0 to 100. This is a rough straight-line guess, so it reads 0 at new m...
Definition moon.c:36

moon_age_sec
int32_t moon_age_sec(time_t utc)
How far into the current moon cycle we are, in seconds.
Definition moon.c:9